//@HEADER
// ************************************************************************
//
//                        Kokkos v. 4.0
//       Copyright (2022) National Technology & Engineering
//               Solutions of Sandia, LLC (NTESS).
//
// Under the terms of Contract DE-NA0003525 with NTESS,
// the U.S. Government retains certain rights in this software.
//
// Part of Kokkos, under the Apache License v2.0 with LLVM Exceptions.
// See https://kokkos.org/LICENSE for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//@HEADER
#ifndef __KOKKOSBATCHED_APPLY_HOUSEHOLDER_SERIAL_IMPL_HPP__
#define __KOKKOSBATCHED_APPLY_HOUSEHOLDER_SERIAL_IMPL_HPP__

/// \author Kyungjoo Kim (kyukim@sandia.gov)

#include "KokkosBatched_Util.hpp"
#include "KokkosBatched_Householder_Serial_Internal.hpp"

namespace KokkosBatched {

///
/// Serial Impl
/// ===========

template <>
template <typename uViewType, typename tauViewType, typename AViewType,
          typename wViewType>
KOKKOS_INLINE_FUNCTION int SerialApplyHouseholder<Side::Left>::invoke(
    const uViewType &u2, const tauViewType &tau, const AViewType &A,
    const wViewType &w) {
  return SerialApplyLeftHouseholderInternal::invoke(
      A.extent(0) - 1, A.extent(1), tau.data(), u2.data(), u2.stride(0),
      A.data(), A.stride(1), A.data() + A.stride(0), A.stride(0), A.stride(1),
      w.data());
}

template <>
template <typename uViewType, typename tauViewType, typename AViewType,
          typename wViewType>
KOKKOS_INLINE_FUNCTION int SerialApplyHouseholder<Side::Right>::invoke(
    const uViewType &u2, const tauViewType &tau, const AViewType &A,
    const wViewType &w) {
  return SerialApplyRightHouseholderInternal::invoke(
      A.extent(0), A.extent(1) - 1, tau.data(), u2.data(), u2.stride(0),
      A.data(), A.stride(0), A.data() + A.stride(1), A.stride(0), A.stride(1),
      w.data());
}

}  // namespace KokkosBatched

#endif
